There are also schools where students are taught by more than one teacher, making it hard to discern individual contributions.
Apple says that people hold the iPad farther from their faces than the phone, so the result is the same: You can't discern individual pixels.
The 12.7cm (5in) screen is only 720p in resolution – meaning it's not pin-sharp and you can discern individual pixels – but impresses, with good, bright colours and deep blacks.
And even so, at a videoconference last Thursday involving the New York, Boston and Washington offices of the law firm of Mintz, Levin, Cohn, Ferris, Glovsky & Popeo, the people on the screen looked as if they were moving in slow motion, and it was difficult to discern individual faces around the large conference table in Boston.
Furthermore, ravens discriminated between unfamiliar ravens in the habituation-dishabituation experiment, indicating that they may discern individual differences.
The Nexus 9 may not have quite the pixel density of either the Nexus 7 or the Nexus 10, but the screen is still plenty dense enough that you won't be able to discern individual pixels.
The retina (I'm assuming this is in the fovea) is an amazing visual machine, and I have no doubt that it would be able to discern individual pixels at 326ppi at 12 inches, if you presented it correctly.
I then review examples of equifinality discussed in the social learning literature, namely the use of s-shaped diffusion curves to discern individual from social learning and operational definitions and analytical approaches used in studies of conformist transmission.
Using pattern recognition software the same technology that lets smart bombs find their targets and computers discern individual voices their system monitors local radio station broadcasts and identifies each song as it's played.
It's impossible to discern individual pixels on the screen, too, thanks to very high PPI, and auto-brightness for the screen works somewhat better than it does on most previous Android phones, although I still find this is an area where Apple has managed to far outstrip its Google-powered rivals.
